Bottle



Oct. l5, 1929.

N. K. GARHART BOTTLE',

Filed oct; s, 1927 //V VEA/TOR.' /m/W ATTORNEY Patented Get. l5, 1929 UNITED STATES PATENT OFFICE NATI-IAN K. GARHART, OF WATERTCWN, MASSACHUSETTS, ASSTGNOR TO GAR/HART DENTAL SPECIALTY CO., OF SOMERVLLE MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS BOTTLE Application filed October 3, 1927.

The invention to be hereinafter described relates to bottles ior dispensing materials7 such, tor example, ascelnent and a phosphoric acid preparation used by dentists.

Heretoiore, for this purpose a bottle has been provided having a dispensing stopper comprising a plug having a hole extending therethrough and a glass tube litted into the hole and projecting a substantial distance out beyond the plug. The tube has a tapered delivery end and is provided with a removable cap. rThe construction is such that on removal of the cap, the bottle may be grasped and shaken, thereby to discharge liquid from the bottle drop-by-drop.

Tt has been found that frequently the glass tube becomes loosened in the hole in the plug and is liable to be pulled therefrom when attempting to draw the cap oil' from the tube. @ne of the purposes ot the present invention is to overcome this diiiiculty. To accomplish this, an elastic rubber plug is provided having a hole extending therethrough, and formed integral with the plug is an elastic rubber tube projecting from he plug. rllhe construction is such that in the useoit the bottle there is no danger of the, tube escaping from the plug.

rThe tube is provided with a removable cap which is so termed that it slightly compresses the elastic tube when slid thereon. The tendency ot the compressed tube to eX- pand insures tight leak preventing engage ment between the cap and tube 'for a long time.

lWith the aforesaid and other purposes in view, the character ot the invention may be best understood by reference to the follown ing description oi one good form there' ot shown in the accompanying drawing, wherein Fig. l bottle;

Fig. 2 shows perspective views oit the plug with its tube, the stiliening quill and the cap;

Fig. 3 is a view looking toward the top is a vertical section through the et the bottle; and

Fig. 4 is a vertical section through the upper part ot the bottle and through the Serial No. 223,520.

stopper showing compression et the tube on application ol" the cap thereto.

Referring to the drawing, the bottle shown therein as one goed form ot' the invention, preferably is made of glass and comprises a body l having a wide nec; 3 with an outer threaded portion 5 above a circumferential bead 7.

The dispensing stopper for the bottle comprises a plug Q made of high grade elastic rubber. Projecting from the upper end oi the plug is aflange ll serving as a gasket for engagement with the rim of the neck. J'relerably the inner wall 13 of the neck is tapered somewhat so that when the plug is forced into the neck, it will be compressed and tend to expand into tight wedging engagement with said Wall.

llhe plug has a hole l5 extending therethroughat the center thereof. Projecting from the plug and molded or formed integral therewith is an elastic rubber tube 17 in registration with the hole in the pluc. lThe outer end ot the tube is tapered and has a small delivery hole therein.

Preferably means is provided for stiftening the tube. To accomplish this, in the present instance, a quill 19 oi Celluloid or other suitable material is inserted through the plug up substantially to the tapered end ot the tube, and the quill may be secured in the plug and tube by `sliellac varnish or other suitable adhesive. rThe shellac varnish is desirable, since it is not dissolved or aiected by phosphoric acid.

The cup-shaped cover 2l 01' Celluloid or other suitable material tits over the plug and the upper end oit the neck, and has a threaded portion E23 adapted to be screwed `onto the neck to hold the plug in the neck and press the gasketagainst the rim of the neck. The cover has a central aperture 25 through which the tube extends and made somewhat larger than the outside diameter of the tube. The topv of the cover is domed so as to leave a recess 27 between the top and the upper end ot the plug.

A thimble-shaped cap Q9 of rubber or other suitable material is formed to tit onto the rubber tube and when slid thereon slightly compress the same, as will be noted in Fig. 4. The inherent resilience of the tube will cause it to tend to expand and maintain tight engagement with the cap. The lower end of the cap has'va bead ,or flange 3l for engagement lwiththe cover and is suiiciently wide to cover the space between the tube and the cover aperture. f

' The plug is made shorter than the bottle neck in order to leave an air space 33 above the liquid lling the body of the bottle, which will allow expansion of the liquid without danger of starting the plug from the neck. It is desirable that the bottle neck and the 4.,, stopper shall be of considerable width, in or- Y vderl that there may be a body of rubber suf- ...I gagement withthe neck.

ciently large-to yield or bulge upward somewhatpn expansion of the liquid in the bottle without withdrawing the plug from tight en- The quill has suiiicient stiffness to -properly support the rubber tube, but is capable of a certain amount of flexion, 'and vtherefore will not materially interfere with the yielding and bulging of the fi Plug In use, when it is desired to dispense the liquid from the bottle, thecap is removed from they tube, and the bottle is firmly grasped and v' shaken tocause the liquid tqdiScharge from mi the'end of the tube drop-by-drop.

f The dispensingstopper having the elastic rubber tubeprojecting from and formed integral with the plug, is a rve'rydesirable feature, since there is never danger of removal i' of the' tube from the plug and no chance of leakage of liquid between the plug and tube. B y forming vthe plug andl tubeof high grade elastic rubber, tight fit of the plug in the neck and tight'lit of the cap on the tube are inl and conditions of its use.

sured. It; is desirable tov form the cap of elastic rubber, since it is found that the rubber cap will have intimate engagement with the rubber tube on the plug and permanently prevent leakage of the liquid from the tube and 'out between the tube and cap.v

vand that various deviations may be made tic rubber plug fitting into the neck of the bottle and having a hole extending therethrough, an elastic rubber tube projecting Jfrom the plug and communicating with said hole, a stii'ening quill in the tube, and a thimble-shaped cap fitted onto the `tube and adapted to compress the saine soiiieivhat to `maintain tight engagement therewith.

3. The combination of a bottle and a dis'- pensing stopper therefor comprising an elastic rubber plug having a hole extending therethrough, an elastic rubber tube projecting from and integral with the plug and communicating with said hole, a stili'ening quill secured in the tube, a iiange projecting from the'plugoverthe rim of the neck, a cover having an aperture receiving the tube and threaded to the neck, and a cap for the tube having an. end adapted to engage the cover, said -capvbeing formed to compress the tube somewhatthereby to insure tight engagement therewith. l I

4. rlhe combination cfa bottle having a body and a neck tapered inward upward toward the end of the neck, and aI 'dispensing stopper comprising an elastic rubber plug expansible into close engagement with the tapered neck and having a hole extending through the plug, an elasticrubbertiibe extending'fr'oni and integral with the plug and communicating with the hole in the plug, and a removable cap on, the tube.. i D

NATHAN K. GARHART'.

ltherefrom without departing from the spirit n and scope/of the appended claims.

lVhat is claimed is l. The combination of a bottleand a dispensing stopper therefor comprising an elastic rubber plug 'fitting into the neck of the bottle vand having a hole therein,.an elastic rubber tube projecting from the plugin communication with said hole, a stiiening quill in thetube, and a cap on 'the tube.

'2; The combination `of a bottleand a disi" pensingstopper therein comprising an elas- 

